Chair



FIG. 1 is a perspective view of the chair embodying my ornamental design;

FIG. 2 is a side elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a back elevation view thereof; and,

FIG. 6 is a top plan view thereof. 

The ornamental design for a chair, substantially as is shown. 